Electric distributing system



Aug, i2 1924.,

154,542 G. A. CARDWELL ELECTRIC DISTRIBUTING SYSTEM Filed Aug. 2l 1919 4 Sheets-Sheet l @Mom/1W ELECTRIC DISTRIBUTING SYSTEM Filed Aug. 2l 1919 4 Sheets-Sheet 2 ff n W W3 W MKM if d

Aug. ,'12, 1924.

G. A. CARDWELL ELECTRIC DISTRIBUTING SYSTEM Filed Allg. l 2l 1919 4 Sheets-Sheet 5 n vuuu MMMHMMHH uuu Munn I u" MLIHUM H l j i E uw Aug, 9 i Y v G. A. CARDWELL ELECTRIC DISTRIBUTING SYSTEM Filed Aug. 21 1919 4 Sheets-Sheet Patented Aug. 12, 1924..

UNITED STATES PATENT OFFICE.

GEORGE A. CABDWELL, OF NEW YORK, N. Y., ASSIGNOR TO NATIONAL ELECTRIC DIS- TRIBUTOR CORPORATION, A CORPORATION OF DELAWARE ELECTRIC DISTRIBUTING- SYSTEM...

Application filed August 21, 1919. Serial No. 318,974.

To all 'whom t may concern:

Be it known that I, GEORGE A. CARDWELL, a citizen of the United States, residing at the city of New York, borough of Manhattan, in the county and State of New York, have invented certain new and useful Improvements in Electric Distributing Systems, of which the following is a full, clear, and exact specification.

My invention relates to a system of distributing electric energy, and the same has for its object more particularly to provide a simple, eiiicient and positive means wherein by the permutation of a minimum number of circuit closing devices, a maximum number of electro-magnetically controlled devices may be severally selectively operated from a central or sending station.

Other ,objects will -in part be obvious and in part be pointed out hereinafter.

To the attainment of the aforesaid objects and ends my invention consists in the novel details of construction, and in the combination, connection and arrangement of parts hereinafter more fully described and then pointed out in the claims.

In the accompanying drawings formin part of this specification wherein like re erence numerals refer to like parts,

Figure 1 is a diagrammatic view showing the circuit connections for a system embodying dmy invention as employed in connection with a typewriter;

Fig. 2 is a diagrammatic plan showing the type bar operating members and the holding means therefor;

Fig. 3 is a view showing the holding means in separated relation and in proper register with the operating members shown in Fig. 2;

Fig. 4 is a side elevation of the mechanism shown in Fig. 2, the forward one of the operating members being shown operatively connected to a type bar, and l Fig. 5 is a detail view illustrating one of the holding bars, and the means for actuating the same.

'For purposes of illustration the invention is shown embodied in a printing telegraph system, in which the type b ars of a typewriter at the receiving station may be severally selectively actuatedby an operator at a sending station, but it is to be understood that the invention may be employed in connection with any other system in which at the receiving station that the desired type bar will be caused to perform its operative function upon the transmission, over the line, of the third impulse of the series. As shown, the invention `is used in connection with two line conductors over each of which positive or negative impulses may be transmitted, and by varying the sequence in which the impulses of different character are transmitted over the several line conductors,

sufficient combinations are afforded to enable. the sendin operator to-actuate any desired one of t e electro-magnetically controlled type bars of the typewriter at the receiving station.

Referring to the drawings, and 11 indicate the line conductors extending between f the sending station and the receiving station, the ground being utilized as a return for both line conductors. At thesending station the transmitting means is shown, by

way of illustration, as comprising four nor- -mally open circuit closers 12, 13, 14 and 15 of any suitable type, the circuit closers 12 and13 being connected to the line conductor 10 and the circuit |closers 14 and 15 being connected to the line conductor 11. The circuit closers 12 and 14 are connected by wires 16 and 17 to the positive terminal of a suitable source of electrical energy 18, and the circuit closers 13 and 15 are connected by wires 19 and 20 to lthe negative terminlal thereof. It will thus be seen that current impulses of opposite polarity may be transmitted.over either of the line conductors 10 or 11 depending upon which one of the circuit closers 12, 13, 1.4, is closed.

At the receiving station polarized rela s 21 and 22 are connected in circuit with tlie line conductors 10 and 11, respectively, the

`relay 21 being adapted to control normally open contacts 23 and 24, and the relay 22 .being adapted to control normally open contacts 25 and 26. As shown, for purposes of illustration, if the circuit closer 12 at the sending stationY is closed, the polarized relay 21 at t-he receiving station will be actuated to close the contact 23. Similarly, the closi of the circuit closers 13, 14 and 15 will e ect the closing of the contacts 24, 25 and 26, respectively.

Each of the contact members on one side of the contacts 23, .24, 25 and 26 are connected to one terminal of a source of electrical energy 27 by a conductor 28 having in circuit' therewith a magnet 29, across the terminals of which is connected a resistance shunt 30. The magnet 29 controls the nor mall 'open contact 29'. The other contact mem ers of the contacts 23,24, 25 and 26 are connected by Wires-31, 32, 33 and 34, to normally closed contacts35, 36, 37 and 38, which, in turn, are connected by wires 39, 40, 41 and 42 to magnets v43, 44, 45 and 46. Themagnets 43, 44, 45 and 46 are connected to the other terminal of the source of electrical energy 27 by Wires 47 and 48. f

The magnet 43 controls the normally open contact 43', and the normally closed contact 432, and the magnets 44, 45 and 46 control, respectively, similar sets of normally open and normally closed contacts 44', 442; 45', 452; and 46', 462. The magnets 43, 44, 45 and 46 also serve to actuate reciprocatable spring-pressed bars 432, 442, 45, 46, respectively, which control the movements of the type bars of a typewriter, as hereinafter described. The normally open contacts 43', 44', 45' and 46' are connected on one side to the magnets 43, 44, 45 and 46 by wires 49, 50, 51 and 52', and on the other side they are connected by a wire 53 with one terminal of a -magnet54 which controls the normally closed contacts 35, 36, 37 and 38. The other terminal of the magnet 54 is adapted to be connected to the wire 28, leading to one terminal of the source of electrical energy 27 through wire 55, normally closed contact56', controlled by a magnet 56, resistance 57 and the normally open contact 29', controlled by the magnet 29.

Wires 58, 59, 60 and 61 lead from wires v31, 32, 33 and 34, to normally closed con tacts 62, 63, 64 andy 65 which are connected b wires 66, 67, 68 and 69, to the normally clyosed contacts 432, 442, 452 and 462, and these last mentioned contacts are in turn connected .by wires 70, 71, 72 and 73 -to magnets 74, 75, 76 and 77, which are connected to the wire 47. The magnet 74 controls a group of normally open contacts 74', 742, 742, 7 4, and similar groups of normally open contacts are controlled by the Amagnets 75, 76 and 77. The magnets 74, 75, 76 and 77 also serve to actuate reciprocatable bars 74, 76 and77, respectively, whichcontrol the movements of the t pe bars of the ty ewriter as hereinafter described. Wires 78 79, 8O and 81, extend from the wires 66, 67, 68 and 69 to one of the contact members of each of the contacts 74' 75', 76' and 77', respectively, the other contact members of which are connected by a wire 82 to one terminal of a magnet 83 controlling the normally closed contacts 62, 63, 64 and 65. The other terminal of the magnet 83 is connected to the wire 55 through wire 82', magnet 84 and wire822.

The contact members on one side of the contacts 7 42, 7 48, 7 4*,7 52, 7 52, 75, &c., are connected by wires 85, 86, 87, and 88 to magnets 89, 90, 91 and 92, which in turn, are connected to the wires 58, 59, 60 and 61. These magnets serve to actuate the type bars of the typewriter, as hereinafter described.' The contact members on the other side of these contacts are connected to the wire 48, leading to the source of electrical energy 27, by a wire 93, having a magnet 94 included in its circuit. The magnet 94 controls a normally open contact 94 `in a shunt circuit 95 extending across the resistance 57 and the normally closed contact 56', .and including the magnet 56, which controls the normally closed contact l56'. The resistance of the magnet 56 is substantially equal to the resistance 57.

96 indicates a typewriter of any approved type comprising a plurality of type bars 96' adapted, when actuated, to perform their operative functions. As shown the typewriter 96 is provided with thirty-six type-bars 96', but it is of course understood that typewriters having a dil'erent number of type bars may be employed, if desired. The typewriter is further provided with thirty-six type barl operating members 97, corresponding to the several type bars 96'. Each operating member 97` is operativelyv connected to its associated ty e barI 96' by means of an upwardly extending strap 97' embracing the type bar 96' and having its upper end normally spaced from type bar 96', whereby the operating member 97 may move to a limited extent without actuatingits associated type bar 96'. The operating members 97 normally rest upon projections 98 formed on the bars 43, 44, 45, 46, 74,

y752, 76n and 77, whereby the depression of the` members 97 to operative position is normally prevented. Each .of the bars 43, 44, 45, 46, 74, 75, 76n and 772L is engaged by nine of the operating members 97, and the projections 98 on the several bars 43, 44, 452, 46, 742, 752, 76 and 772 are so arranged that each `member engages one bar of the group of bars 43, 44, 45a and 46, and one bar of the group of bars 74, 752,76 and 77 from which it will be seen that one bar of each group of bars must be actuated to cause the projections 98 thereon to move out of engagement-with andthereby release any one of the operating members 97 which is to be depressed to effect its operative function. The projectionsl 98 of the several bars '432, 44a, 45, '46, 74, 75a, 76a and 77 are further so larranged that when any one bar of the group of bars 432, 442, 452, 462 is actuated, nine of the operating members 97 will be partially released, and the succeeding actuation of any one of the bars of the group of bars 742, a, 76a and 77a will effect the complete release of three of the nine operating members 97 which have been thus partially released. The thirty-six operating members 97 are arranged in four groups or sections of nine members each, as indicated by 99, 992, 993 and 994, and the several parts are so arranged that the three members 97 which have been fully released, as above explained, will be in different sections.

The actuation of the operating members 97 to cause them to perform their operative functions, after the complete releaseJ thereof as above explained, is effected by the magnets 89, 90, 91 and 92, which control the members of the sections 99', 992, 993 and 994, respectively, by means of oscillating members 100 .each of which 'is provided with an arm 1002. In the normal positions of the oscillating members 100, the arms 1002 thereof lie normally out of the lpath of movement of the fro-nt ends of the operating members 97. The members which have been partly released, in the manner above explained, will be held ternporarily suspended by the type bar 96. .pon the third impulse of any one of the magnets 89, 90, 91 and 92 being energized, the oscillating member 100 associated ltherewith Will be caused'to rotate by the act-ion of each magnet upon its armature 104 and the free end of the arm 103 upon the projection 105 ofthe oscillating member 100, whereby the end ofthe arm 1002 will be moved down- Wardly and engage theupper surface of the forward end ofthe member 97 and depress said member and correspondingly draw down the t pe bar 96 by means of the strap 97', wldereupon the operative function of the associated type bar 96 will b e effected.

A restoring rod 102, extending transversely of the typewriter and normally engaging the under surfaces of all of the operating members .97, is operatively connected to the magnet 84 by the arm 101 and is adapted to be lowered out of the path of movement of `the members upon the energization of the magnet 84. The upward movev ment of the rod 102, in returning to its normal position. after the magnet 84 has become deenergfized, assists in restoring the fully released, and the partially released operating members to their normal positions. The oscillatin member 100, and the arm 1002 thereof w11l be restored to its initial position by the magnet 89, and arm 103 which is connected at its `outer end to the projection 105 of the oscillating member 100. Broadly, the operation is as follows In order tol actuate any one of the type bars 96 of the typewriter 96 it is necessaryY for the sender to transmit three impulses over the lines 10, 11 and by sending these impulses in a predetermined sequence, certain ofthe magnets at the receiving station arev so actuated that the desired type bar will 'be moved 'to effectl its operative lfunction. .As a result of the first impulse one ofthe group of magnets 43, 44, 45 and 46, will be energized, and the magnet thus .energized will actuatel its associated bar of the group of bars 432, 442, 45a, 46a to partially release nine of the operating members 97 The second impulse will cause the en ergization of one of the group of magnets 74, 75, 76 and 77 and the magnet thus energized will actuate its associated bar ofthe group of bars 742, 7 52; 762, 772, to fully release three of the nine partially released operating members. The energized magnet of this last mentioned/group will also close the normally open -contacts associated therewith as a result of which the circuits through certain of the magnets 89, 90, 91 and 92 will 'be partially closed. The third; impulse will effect-the closing of one of these partially closed circuits, depending upon which one of the. relay contacts 23, 24, 25, 26 is closedy by such impulse, and the magnet in the thus closed circuitl will be energized to effect the rotation of the oscillating member 100 associated `therewith whereupon the arm 1002 thereof will actuate one of the three fully released operating members and cause it to perform its operative function.

Assume, for example, that the impulses sent by means of the circuit closers 12, 13, 14 and 15 at'the sending station are designated respectively, l, 2, 3 and 4, and assume, for purposes of illustration, that in order to actuate the desired type bar 96 the impulses must be sent in the sequence 1-2 4. It will be noted that the type bar 96 responsive 't0 the series of impulses 1-24 is positioned in section 99* of the type bars, and that the actuation of the type bars in this section is controlled by the magnet 92. The circuit closer 12 is first closed, thus sending a positive impulse over'the line conductor 10 whereby the polarized relay 21 will be actuated to close the contact 23, thereby completing a circuit at the receiving station as follows-source of electrical energy 27, wire 28, magnet 29, wire 28, contacts 23, (now closed, Wire 31, contact 35, wire 39, magnet 43, wire 47, wire 48, to source of energy 27. The energization of magnets. 29 and 43, will close contacts 29 and 43 and current will How along the following path-Wire- 28, contact 29 (now closed) resistance 57, contact 56', wire 55, magnet 54, wire 53, contact 43', (now closed) 'magnet 43, wire 47, wire 48.., The energizetion of magnet 54`will open contacts 35, 36, 37 and 38, thereby breaking the normally `97 are also in engagementV with one or the other of the bars 74a, 75, 7 6a and 77a, such members will remain in their normal positions. When the circuit closer 12 is opened Vthe relay 21 returns to normal position, thus opening contact 23, but the de-energization of the magnet 29 will be retarded owing to theinductance of the magnet 29 and the resistance shunt 30, and, therefore, the contact 29' will be held closed during the short. interval of time between the sending of successive impulses as a result of which the magnets 54 and 43 will not be de-energi'zed.

Thesecond impulse is now transmitted by closing the circuit closer 13, thereby sending a negative impulse over line conductor l() and causing the polarized relay 21 to close .the contact 24. Current will now flow as follows at the receiving station-wire 28, magnet 29, wire 28, contact 24, wire 32,

I wire 59, contact 63, wire 67, contact 442, wire 71, magnet 75, wire 47, wire 48. As the ,contact 29 was held closed between impulses, as above explained, and as it is now held closed `by the ene'rgization of magnet 29, the magnet 54 remains energized thus holding open contacts 35, 36, 37 and 38 which form part of the normally closed circuits of magnets 43, 44, 45 and 46. The energization of magnet 75, closes contacts' 75', 752, 753 and 7 54. The closing of contact 75' completes a path for the current as folloWs-Nvire 28, contact 29', (now closed) wire 57 contact -56', wire 55, wire 822, maghet 84, wire 82', magnet 83, wire 82, contact 75'-, (now closed) wire 79, Wire 67, contact 442, wire 71, magnet 75, wire 47, Wire 48.

The energization of magnet 83 causes the` contacts 62, 63, 64 and 65 to ,open and break the normally closed circuits of magnets 74, 75, 76 and 77, but magnet 75 will remain energized by the current owing through the holding circuit as abo-Ve traced. The closing of' contacts 752, 7 53, 7 54, by the magnet 75, closes, in part, the circuits of magnets 89, 91 and 92, whereby one or the other thereof maybe energized upon the sending of the third impulse, depending upon y'whichone of the circuit closers at the sending station is closed. The energization l of the magnet 75 will also actuate the bar A75*l to effect the full release of three of the nine: operating members 97 which were par-v tially released upon the actuation of the bar 43, and, as the restoring rod 102 has been lowered out of engagement with the members 97, due to the energization of the magnet 84, each of the three fully released operating members 97 will enter into engagement with the arm 1002 of the oscillating member 100 associated with that one of the sections 99', 992, 993, 99* containing such member. and in the path of the arm 1002 thereof. This. movement of the three fully released operating members 97 causes the strap 97' to be moved into engagement with their associated type bars 96', but is not sufficient to permit of their operative functions being effected. It will be seen from the diagrammatic illustration shown in Fig.

2 that, as a result of the actuation of the bars 43 and 75, the three operating members 97 which have been thus fully released are the ones responsive to impulses 1-2-1, 1-2-3, and 1-2-4, and that they are positioned, respectively in sections 99', 99, and 994.

As before explained, the contact 29 is held closed between successive impulses and therefore the magnets 54, 43, 83, 84 and 75 will remain energized during the interval between the second and third impulses.

The third impulse is now transmitted b closing the circuit 'closer 15 thereby sen ing a negative impulse over line conductor 11 and causing the polarized relay 22 to close contact 26. Current will `now flow as follows-(it being remembered that contacts 35, 36, 37, 38,62, 63, 64 and 65 are open) wire 28, magnet 29, wire 28, contact 26 (now closed'wire 34, wire 61, magnet 92, wire 88, contact 7 5", (now closed) wire 93, magnet 94, wire 48. The energization of the magnet 92, which is associated with the operating members V97 of section 99, will effect the rotation of the oscillating member 100 associated therewith and cause its arm 100 to engage and depress the outer end of the fully released member 97, correspondin to impulses l-2-4, it bein remembe that the outer end of this mem r has been permitted to drop and into the ath of the arm 100 by the actuation of t e bars 43l and 75 due to the energization of magnets 43 and 75. The depression of said operating member 97 will cause it to depress its associated type bar 96', by means of the strap 97', whereupon the type bar 96 will perform its operative function.

The energization of magnet 94 closes contact 94' of the shunt circuit 95 which includes the magnet 56, and as a result of the energization ofthe magnet 56'the contact 56 will be opened. The opening of the contact 56' Iwill not affect the flow of current through the magnets 54, 43, 84, 83 and 75, as the current which fiowed from the wire 28 to the wire 55 through contact 29', resistance 57, and contact 56', will now flow from wire 28 to wire 55 through .the |shunt circuit 95.

When the circuit closer 15 at the send ing station is opened, at the completion of the transmission of the third and last impulse of the series, the polarized relay 22 will be restored to its normal condition, thus opening the contact 26 .and breaking the circuit at the receiving statiou through magnets 92 and 94. Upon the magnet 94 becoming de-energized the contact 94 lwill open, and as this contact is adjusted to open before the contact 56 can close, the circuits through the magnets 54, 43, 84, 83 and '75 will be broken, whereupon the parts of the apparatus .at the receiving station which were actuated by these several magnets will be restored to normal condition and the apparatus will thereupon be in readiness for the next operation. y

For purposes of illustration the invention has been shown and describedlin connection with a main line having two line conductors over which positive or negative impulses may be sent, it is to be understood that the invention is in no way limited to the number of conductors' employed or 'to the particular character of the impulses transmitted, as both of these may be varied "1n accordanceiwith the type and character of the system 'in connection with which the invention is employed. y

Havingl thus described my said invention what I claim and desiremto secure'by Letters Patent is l 1. An electric distributing system comprising a plurality of groups of magnets, normally open circuits therefor, means adapted to be actuated bylan electric impulse for closing the circuit through a selected magnet of on of said groups, a magnet responsive to the current in said closed circuit for completing a holding circuit through said selected magnet, meansA for retarding the de-energization of said magnet upon the breaking of its circuit when said electric impulse ceases, and means controlled by said selected magnet of said one group for partially closing the circuit of a magnet of another of said groups, said firstmentioned means serving to close said partially closed circuit in response to a succeeding electric impulse, whereby the magnet associated therewith willbe energized, substantially as specified.

2.- An electricfdistributing system comprising a main line, means for transmitting successive impulses thereover, a plurality of groups of magnets, normally open circuits therefor comprising circuit closing means res onsive to im ulses over the main line an serving to c ose the circuit through a selected magnet of one of said groupsupon the first of a series of impulses being transmtted over the line, a holding magnet in said closed circuit and responsive to the current therein to complete a holding circuit through the selected magnet, means for retarding the cle-energization of said holding magnet upon the breaking of its circuit when said first impulse ceases, and means controlled by the selected magnet of said one group to partially close the circuits of certain of the magnets of another of said groups. said circuit closing means serving in response to a succeeding impulse of the series to close a selected o'ne of said partially closed circuits, whereby the magnet asso'- ciated therewith will be energized, substantially as specified.

3. An electric distributing system com- .prising a main line extending between a sending station and a receiving station, means at the sending station for transmitting successive electric impulses over said main line, la plurality/of groups of working magnets at said receiving station, electric circuits therefor including a holding magnet, means for closing said circuits and energizing said holding magnet in response to the Iimpulses sent over said' main line, holding circuits for maintaining energized the magnets of certain of said groups of working magnets and including a normally open contact adapted to be closed upon the ener-. gization of said holding magnet, means associated `with said holding magnet for preventing the de-energization thereof between successive impulses. and means associated with the magnetsof one of said groups for partially completing the circuits through the magnets of another ofsaid groups, substantially as specified.

4. An electric distributing system com- Iprising a main line extending between a sending station' and a receiving station, means at the sending station for transmitting successive electric impulses over said main lin'e, a plurality of groups of working magnets at said receiving station, electric circuits therefor including a holding mag-- net, means for closing said circuits and energizing said holding magnet in response. to the impulses sent over said main line, holding circuits for maintaining energized the magnets of certain of said groups of working magnets and including a normally open contact adapted to be closed upon the energization of said holding magnet, a re,- sistance connected in shunt with said holding magnet for preventing the de-ener ation thereof between successive impu ses, and means associated with the magnets of one of sa-id groups for partially completing the circuits throu h theemagnets 'of another of said groups, su tanti'ally as specified.

5. An electric distributing system comprising a main line extending between a sending station and a recerving station, means at the sending station for transmitting successive Velectric impulses over said main line, a group of working magnets at the receiving kstation, normally open circuits for said magnets including a holding magnet, means responsive to an impulse over said main line to close the circuit of a selected magnet of said group, holding cir-| cuits for the magnets of said group for maintaining energized the selected magnet, saidv holding circuits including a 4normally open contact adapted to be closed upon the energization of said holding magnet, means for preventing the de-energization of said holding magnet between successive impulses, a second group of working magnets, and means controlled by the selected ma et of Said first mentioned group to partial y close the circuit of certain of the magnets of said second mentioned group, said impulse-responsive means serving to close a selected one of said partially closed circuits upon a succeeding impulse being transmitted over the line, whereby the magnet associated with said closed circuit will be energized, substantiall as specified.

Signedr at the city of New York, in the county and State of New York, this 9th day of July, one thousand nine hundred and nineteen.

GEORGE A. CARDWELL. Witnesses:

CONRAD A. DIETERICH, JOSEPH G. QUINN, Jr. 

